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AleksAgata [21]

3 years ago

5

003 divided by 6.321

1 answer:

ziro4ka [17]3 years ago

5 0

0.47460844803037 this is the answer

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Solve algebraically please URGENT <br> y=5x−7 <br> −6x−4y=−24

Kazeer [188]

$\left\{\begin{array}{ccc}y=5x-7\\-6x-4y=-24&\text{divide both sides by (-2)}\end{array}\right\\\left\{\begin{array}{ccc}y=5x-7&(*)\\3x+2y=12&(**)\end{array}\right\\\\\text{substitute }\ (*)\ \text{to}\ (**):\\\\3x+2(5x-7)=12\qquad\text{use distributive property}\\\\3x+(2)(5x)+(2)(-7)=12\\\\3x+10x-14=12\qquad\text{add 14 to both sides}\\\\13x=26\qquad\text{divide oth sides by 13}\\\\\boxed{x=2}\\\\\text{Put the vaalue of x to}\ (*):\\\\y=5(2)-7\\\\y=10-7\\\\\boxed{y=3}\\\\Answer:\ \boxed{x=2\ and\ y=3\to(2,\ 3)}$

7 0

3 years ago

Find the solution of the differential equation that satisfies the given initial condition. dy/dx=x/y , y(0)=-1

Charra [1.4K]

Separating variables, we have

$\dfrac{dy}{dx} = \dfrac xy \implies y\,dy = x\,dx$

Integrate both sides.

$\displaystyle \int y\,dy = \int x\,dx$

$\dfrac12 y^2 = \dfrac12 x^2 + C$

Given that $y(0)=-1$ , we find

$\dfrac12 (-1)^2 = \dfrac12 0^2 + C \implies C = \dfrac12$

Then the particular solution is

$\dfrac12 y^2 = \dfrac12 x^2 + \dfrac12$

$y^2 = x^2 + 1$

$y = \pm\sqrt{x^2 + 1}$

and because $y(0)=-1$ , we take the negative solution to accommodate this initial value.

$\boxed{y(x) = -\sqrt{x^2+1}}$

7 0

2 years ago

Brandy solved 1/6÷5 by using a related multiplication expression. What multiplication expression did she use?

tekilochka [14]

Answer:

THE ANSWER IS 30

Step-by-step explanation:

We can solve this problem by multiplication expressions. See below.

1/6 ÷5 $= \frac{1}{6} * \frac{1}{5} = \frac{1}{30} =$ 30

8 0

2 years ago

Lucy had 3 2/3 gal of paint. After painting a room she had 1 1/4 gal left how many gallons of paint did Lucy use to paint a room

garik1379 [7]

Answer:

$2 \frac{5}{12}$

gallons of paint was used by Lucy.

Step-by-step explanation:

$3\frac{2}{3} - 1\frac{1}{4} = \frac{44}{12} - \frac{15}{12} = \frac{29}{12}$

29/12 = 2 5/12

7 0

3 years ago

WILL GIVE BRAINLIEST!!!! it looks like an explanation but i just need an answer!!

Slav-nsk [51]

Answer:

5: 60

6: 30

Step-by-step explanation:

just a matter of multiplying all the possible values

5: 5 pants X 4 shirts X 3 shoes

6: 10 numbers (0-9) X 3 variations (right, left, right,)

5 0

3 years ago